2005 SUZUKI SWIFT Air bag diagnostic

Downloaded from www.Manualslib.com manuals search engine 8B-68 Air Bag System:
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
The combined resistance of the side-air bag (inflator) module (driver or passenger), harness wiring and connector
terminal contact is below a spec ified value for specified time.
Flow Test Description
Step 1: Check whether malfunction is in side-air bag (inflator) module.
Step 2: Check side-air bag initiator circuit in floor harness.
Step 3: Check side-air bag init iator circuit in seat harness.
DTC Troubleshooting Step Action YesNo
1 1) With ignition switch OFF, disconnect side-air bag (inflator) module connector under front seat cushion.
2) Check proper connection to driver or passenger side-air bag (inflator) module at terminals in “L25” or “L30”
connector.
3) If OK, then connect special tools (B) and (C) to side-air bag (inflator) module connector disconnected at the Step
1.
Special tool
(B): 09932–75010
(C): 09932–78340
4) Check SDM DTC.
With ignition switch ON, is DTC B1062 or B1066 still
indicated? Go to Step 2.
Go to Step 3.
“L25”, “L30”
(C)
(B)
STEERING WHEEL
I4RS0A820032-01

Downloaded from www.Manualslib.com manuals search engine 8B-70 Air Bag System:
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components, ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

DTC B1063 / B1067: Driver / Passenger Side-Air Bag Initiator Circuit Short to GroundS7RS0B8204032
Wiring Diagram3 1) With ignition switch OFF, disconnect special tools (B)
and (C) then reconnect connector “L25” or “L30”.
2) Disconnect side-air bag (inflator) module connector (1) from side-air bag (inflator) module.
3) Check proper connection to side-air bag (inflator) module at terminal in connector.
4) If OK, then connect special tools (A), (B) and (C) to side- air bag (inflator) connector.
Special tool
(A): 09932–76010
(B): 09932–75010
(C): 09932–78310
5) Check SDM DTC.
With ignition switch ON, is DTC B1062 or B1066 still
indicated? DTC B1062: Repair
short from “GRY/RED”
wire circuit to “GRY”
wire circuit in seat
harness or from “GRY/
RED” or “GRY” wire
circuit to other wire
circuit.
DTC B1066: Repair
short from “BRN/WHT”
wire circuit to “BRN”
wire circuit in seat
harness or from “BRN/
WHT” or “BRN” wire
circuit to other wire
circuit.
Replace side-air bag
(inflator) module
referring to “Side-Air
Bag (Inflator) Module
Removal and
Installation”.
Step Action Yes No
1
“L25”, “L30”
STEERING WHEEL(B)
(C)
(A)
I4RS0A820034-01
1
2
3
GRN
RED
8
BLK
L29-27
L29-28 IG
E1
4
“L29”
“L04”
“G32”
“L29”
L29-12
DS+
L29-11
DS-GRY
GRY/RED
56
“L25”
L29-13
PS+
L29-14
PS-BRN
BRN/WHT7
“L30”[A]
I7RS0A820020-04
[A]: Shorting bar 3. “A/BAG” fuse 6. Driver side-air bag (inflator) module
1. From main fuse 4. Junction block assembly 7. Passenger side-air bag (inflator) module
2. Ignition switch 5. SDM 8. Ground for air bag system

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-71
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
The voltage measured at side-air bag (driver or passenger) init iator circuit is below a specified value for specified time.
Flow Test Description
Step 1: Check whether malfunction is in side-air bag (inflator) module.
Step 2: Check side-air bag initiator circuit in floor harness.
Step 3: Check side-air bag init iator circuit in seat harness.
DTC Troubleshooting Step Action YesNo
1 1) With ignition switch OFF, disconnect side-air bag (inflator) module connector under front seat cushion.
2) Check proper connection to driver or passenger side-air bag (inflator) module at terminals in “L25” or “L30”
connector.
3) If OK, then connect special tools (B) and (C) to side-air bag (inflator) module connector disconnected at the Step
1.
Special tool
(B): 09932–75010
(C): 09932–78340
4) Check SDM DTC.
With ignition switch ON, is DTC B1063 or B1067 still
indicated? Go to Step 2.
Go to Step 3.
“L25”, “L30”
(C)
(B)
STEERING WHEEL
I4RS0A820032-01

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-73
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components, ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

DTC B1064 / B1068: Driver / Passenger Side-Air Bag Initiator Circuit Short to Power CircuitS7RS0B8204033
Wiring Diagram
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
The voltage measured at side-air bag (driver or passenger) init iator circuit is above a specified value for specified time.
Flow Test Description
Step 1: Check whether malfunction is in side-air bag (inflator) module.
Step 2: Check side-air bag initiator circuit in floor harness.
Step 3: Check side-air bag init iator circuit in seat harness.
1
2
3
GRN
RED
8
BLK
L29-27
L29-28 IG
E1
4
“L29”
“L04”
“G32”
“L29”
L29-12
DS+
L29-11
DS-GRY
GRY/RED
56
“L25”
L29-13
PS+
L29-14
PS-BRN
BRN/WHT7
“L30”[A]
I7RS0A820020-04
[A]: Shorting bar 3. “A/BAG” fuse 6. Driver side-air bag (inflator) module
1. From main fuse 4. Junction block assembly 7. Passenger side-air bag (inflator) module
2. Ignition switch 5. SDM 8. Ground for air bag system

Downloaded from www.Manualslib.com manuals search engine 8B-76 Air Bag System:
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components, ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

DTC B1071: Forward-Sensor Performance ProblemS7RS0B8204034
DTC Will Set when
SDM receives internal fault signal or wrong ID (Part No.) signal from forward-sensor.
DTC Troubleshooting1) Turn ignition switch OFF.
2) Replace forward-sensor referring to “Forward-Sensor Removal and Installation”.
3) Repeat “Air Bag Diagnostic System Check”.
DTC B1072: Forward-Sensor Communication ErrorS7RS0B8204035
DTC Will Set when
Forward-sensor abnormal signal is detected by SDM.
DTC Troubleshooting
1) Turn ignition switch OFF.
2) Replace forward-sensor referring to “Forward-Sensor Removal and Installation”.
3) Repeat “Air Bag Diagnostic System Check”.
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

DTC B1073: Forward-Sensor Circuit Short to GroundS7RS0B8204036
Wiring Diagram
1 2
3
GRN
RED
7
BLK
L29-27
L29-28 IG
E1
4
“L29”
“L04”
“G32”
“L29”5
ORN
PNK/BLK
ORN
PNK/BLKL29-50
FD+
L29-51
FD-6
“E13”
“L03”“E44”
I7RS0A820024-01
1. From main fuse 4. Junction block assembly 7. Ground for air bag system
2. Ignition switch 5. SDM
3. “A/BAG” fuse 6. Forward-sensor

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-77
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
Forward-sensor abnormal signal is detected by SDM.
Flow Test Description
Step 1: Check for short circuit between forward-sensor circuit and ground.
Step 2: Check if malfuncti on is in forward-sensor.
DTC Troubleshooting
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

Step Action YesNo
1 1) Disconnect forward-sensor connector “E13”.
2) Disconnect SDM connector “L29”.
3) Check proper connection to SDM connector at terminals “L29-50” and “L29-51” or terminals.
4) Measure resistance between “L29-50” terminal and body ground, “L29-51” terminal and body ground.
Special tool
(A): 09932–76010
Is each measured resistance infinity? Go to Step 3.
“ORN” circuit or “PNK/
BLK” circuit shorted to
ground.
2 1) Check forward-sensor referring to “Forward-Sensor Inspection”.
Is it in good condition? Substitute a known-
good SDM and recheck.
Replace forward-sensor
referring to “Forward-
Sensor Removal and
Installation”. If DTC still
exists, substitute a
known-good SDM and
recheck.
"L29-50" "L29-51"
(A)
I7RS0A820025-01

Downloaded from www.Manualslib.com manuals search engine 8B-78 Air Bag System:
DTC B1074: Forward-Sensor Circuit Short to Power Circuit or OpenS7RS0B8204037
Wiring Diagram
CAUTION!
• Be sure to perform “Air Bag Diagnostic System Check” before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adapter from special tool (Connector test adapter kit).
• When a check for proper connection is required, refer to “Inspection of Intermittent and Poor Connections”.
• If there is open circuit in the air bag wire harnes s, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.

DTC Will Set when
Forward-sensor abnormal signal is detected by SDM.
Flow Test Description
Step 1: Check for open circuit in forward-sensor circuit.
Step 2: Check for short circuit between forward-sensor circuit and ground.
Step 3: Check for short circuit between forw ard-sensor circuit and power supply circuit.
Step 4: Check if malfuncti on is in forward-sensor.
1
2
3
GRN
RED
7
BLK
L29-27
L29-28 IG
E1
4
“L29”
“L04”
“G32”
“L29”5
ORN
PNK/BLK
ORN
PNK/BLKL29-50
FD+
L29-51
FD-6
“E13”
“L03”“E44”
I7RS0A820024-01
1. From main fuse 4. Junction block assembly 7. Ground for air bag system
2. Ignition switch 5. SDM
3. “A/BAG” fuse 6. Forward-sensor

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-79
DTC Troubleshooting
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

StepAction YesNo
1 1) Disconnect forward-sensor connector “E13”.
2) Disconnect SDM connector “L29”.
3) Check proper connection to SDM connector at terminals “L29-50” and “L29-51” or terminals.
4) Check proper connection to forward-sensor connector at terminals “E13-1” and “E13-2”.
5) Using service wire (1), connect “E13-1” terminal and “E13-2” terminal of forward-sensor connector.
6) Measure resistance between terminals “L29-50” and “L29-51” of SDM connector.
Special tool
(A): 09932-76010
Is each measured resistance 1
Ω or less? Go to Step 2. High resistance or open
wire in “ORN” circuit or
“PNK/BLK” circuit.
2 1) Disconnect service wire from “E13” connector. 2) Measure voltage between “L29-50” terminal and body ground, “L29-51” terminal and body ground.
With ignition switch ON, is each measured value 1 V or less? Go to Step 3. “ORN” circuit or “PNK/
BLK” circuit shorted to
power supply circuit.
3 1) Check forward-sensor referring to “Forward-Sensor Inspection”.
Is it in good condition? Substitute a known-
good SDM and recheck.
Replace forward-sensor
referring to “Forward-
Sensor Removal and
Installation”. If DTC still
exists, substitute a
known-good SDM and
recheck.
(A)
"L29-50" "L29-51"
"E13-1" "E13-2"1
I7RS0A820026-01
"L29-50" "L29-51"
(A)
I7RS0A820027-01